/* SQUIB - Scala's Quirky User Interface Builder 
    Copyright (C) 2008 Tim Dalton

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
*/

package tfd.scala.squib;

abstract class BuiltAddableObject[T <: Object, I] extends HasDefaultAttributes 
    with HasSetterAttributes
{
    def apply(id:String, rest:Any*) = {
        val obj = doId(id, newObject) 
        processParams(id, rest.elements, obj)
        obj
    }
    
    def apply(rest:Any*) = {
        val obj = newObject
        processParams(null, rest.elements, obj)
        obj
    }
    
    private def processParams(id:String, parms:Iterator[Any], obj:T) = {
        var accumulatedAttrs:Attributes = null
        var savedContent:Iterator[I] = null
        for (parm <- parms) {
            parm match {
                case attrs:Attributes => doSetters(id, obj, attrs)
                case tup:Tuple2[Symbol, Any] =>
                    if (accumulatedAttrs == null) {
                        accumulatedAttrs = new Attributes
                    }
                    accumulatedAttrs += tup
                case content:Iterator[I] => savedContent = content
                case unk:Any => throw new Exception(unk.toString + " doesn't represent attributes or contents for " + this.getClass)
            }
        }
        if (accumulatedAttrs != null) doSetters(id, obj, accumulatedAttrs)
        if (savedContent != null) savedContent.foreach(item => performAdd(obj, item))
    }
    
    def performAdd(obj:T, item:I)
    
    def newObject:T
}
